EM4518 – Omnidirectional Electret Condenser Microphone Sensitivity Directivity Impedance Current Consumption Standard Operation Voltage Sensitivity Reduction S/N Ratio Sensitivity Range OdB = 1V/Pa. 1KHz Omnidirectional Low Impedance Max. 0.5mA 2.0V Within –3dB at 1.5V More than 58dB -44 ± 4dB, -46 ± 4dB, -48 ± 4dB, -50 ± 4dB Typical Frequency Response Curve: Unit: mm Schematic Diagram: